Question

(1) Assertion (A) : Friction is a force which acts in the direction of motion of a body. Reason (R) : Polishing a surface reduces friction of the surface. *

(a) Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are correct, but reason does not explain Assertion.
(c) Assertion is correct but Reason is incorrect
(d) Assertion is incorrect but Reason is correct
(2) Assertion (A): Smooth surface shine. Reason (R): Less irregularity is there in the smooth surface

(a) Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are correct, but reason does not explain Assertion.
(c) Assertion is correct but Reason is incorrect
(d) Assertion is incorrect but Reason is correct
(3) Assertion (A): Friction wears out the rubbing surfaces. Reason (R): Friction causes wastage of energy *

(a) Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are correct, but reason does not explain Assertion.
(c) Assertion is correct but Reason is incorrect
(d) Assertion is incorrect but Reason is correct
(4) Assertion (A): Good fuels have high calorific value. Reason (R): Some fuels have low ignition temperature *

(a) Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are correct, but reason does not explain Assertion.
(c) Assertion is correct but Reason is incorrect
(d) Assertion is incorrect but Reason is correct
(5) Assertion (A): Bacteria are prokaryotic in nature. Reason (R): Cells which have well defined nucleus are not developed. *

(a) Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are correct, but reason does not explain Assertion.
(c) Assertion is correct but Reason is incorrect
(d) Assertion is incorrect but Reason is correct​

Answer 1

Explanation:

Correct option is

D

Both Assertion and Reason are incorrect

solution

Answer 2

ANSWER :

1. OPTION (B)

2. OPTION (A)

3. OPTION (C)

5. OPTION (C)